Jon, I hate to differ with you, man...
But unless you hit it a whole lot harder than I do, twelve hours is just gross overkill.
BAC drops about .015 per hour. If it takes twelve hours to recover, you must've started at .18, about 2 1/2 times the driving limit.
At my weight (185 today, yay me) that's nine beers in an hour. I seem to remember that you're a substantially (ahem) larger man than I am, so you'd probably take a twelve pack to get there. In an hour.
That ain't social drinking, my friend.
Robert
Rob - recall that Ground School is more about pilot safety than anything else. Also, it's
far easier to massively screw up in an aircraft, and you're just about
guaranteed to get a serious case of death in any case of an aircraft striking something other than the air.
Before I had to start on Depakote (dammit! 500mg BID...) I didn't drink often. But, a night of drinking was usually done at home (it cost entirely too damned much to go out and do it,) the first fifth last about 120-150 minutes to get the buzz going, and the second one would last the rest of the evening for maintenance (you're right - I am rather larger than you. I also don't bother with beer [never acquired a taste for drinking the stuff over here anyhow - overseas is far more tolerable,] and my liver works far too well to get the desired effect from beer in the first place.)
I have no idea how long it would take to shake off the drunk - I'd usually enjoy being drunk and spend the evening "getting handsy" with my S/O until I finally decided to pass out. Usually woke up 5-6 hours later feeling just ducky, still not hurting too badly, and have a productive day.
I didn't feel at all impaired, and would probably pass a Breathalyzer at aught point aught aught, but why take the chance? It's a rule I'd learned, it's a rule that has served me well for longer than I'd care to admit to.
Doesn't matter where I started - by the time I'd cleared myself to drive, I
know I was clear to drive - and that's enough for me. Maybe I'm a bit more cautious than I really need to be - but life is all about risk management, and some risks are easier to manage and/or avoid than others!